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Benitoite
Benitoite

Sunstone
Sunstone



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Benitoite
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Sunstone

Benitoite and Sunstone Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
O = colorless; E = purple
Weak or absentWalter Schumann
1.3 Dispersion
0.04None
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
1.757-1.8041.53-1.55
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Triclinic
1.8 Birefringence
0.0470.007-0.010
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent to translucent

Benitoite and Sunstone Optic Character

Benitoite and Sunstone optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Benitoite and Sunstone Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Benitoite and Sunstone optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Benitoite and Sunstone Transparency

Similar to their colors, Benitoite and Sunstone transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Benitoite is Transparent while Benitoite is Transparent in appearance.